What do you mean by Wavelength and Frequency of Sound waves? Give the range of frequencies of
sound waves that an average human ear car detect. A source of sound wave produces lucrests and
10troughs in 0.2s. The distance between a crest and next trough is 25cm. Fin
frequency and time period of the wave.
Answers
Wavelength: The distance between two consecutive compressions or two consecutive rarefactions is known as the wavelength. Its SI unit is meter (m).
Frequency: The number of complete oscillations per second is known as the
frequency of a sound wave. It is measured in hertz (Hz).
For a person with normal hearing, when it comes to pitch the human hearing range starts low at about 20 Hz. That’s about the same as the lowest pedal on a pipe organ. On the other side of the human hearing range, the highest possible frequency heard without discomfort is 20,000Hz. While 20 to 20,000Hz forms the absolute borders of the human hearing range, our hearing is most sensitive in the 2000 - 5000 Hz frequency range.
Answer:
In Newtonian physics, free fall is defined as the motion of an object where gravity is the only force acting upon it. ... A skydiver may be pulled towards earth by gravity, but they are also affected by air resistance, a force opposing their downward movement.